Well i noticed that the The font on the lock screen is not what it should be, but rather it is thicker and the same when it says the day of the week, it says the whole name instead of the abreviation. I'm using MIUI Xiaomi.eu 14.0.4.0
Just a disadvantage of a Global ROM base. Not much to be done about it, even some China ROMs have different layout for the lock screen clocks.
And since the lock screen design was completely reworked in HyperOS - this is not even in the to-do list.